rt-thread/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout

The Arduino Compatible for STM32F401 Nucleo Board

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1 RTduino - Arduino Ecosystem Compatibility Layer for RT-Thread

STM32F401 Nucleo board has support RTduino. Users can use Arduino APIs, third party libraries and programming method to program on Blue Pill board.

1.1 How to Enable RTduino

Please go to the RTduino repository to see the details.

Hardware Drivers Config --->
    Onboard Peripheral Drivers --->
        [*] Compatible with Arduino Ecosystem (RTduino)

2 Arduino Pinout

This board complies with Arduino UNO pins layout. For more details, please take a look at: pins_arduino.c and pins_arduino.h.

Arduino Pin	STM32 Pin	5V Tolerate	Note
0 (D0)	PA3	Yes	Serial-Rx. Token over by RT-Thread UART device by default
1 (D1)	PA2	Yes	Serial-Tx. Token over by RT-Thread UART device by default
2 (D2)	PA10	Yes
3 (D3)	PB3	Yes	PWM2-CH2. Token over by RT-Thread PWM device by default
4 (D4)	PB5	Yes
5 (D5)	PB4	Yes	PWM3-CH1. Token over by RT-Thread PWM device by default
6 (D6)	PB10	Yes	PWM2-CH3. Token over by RT-Thread PWM device by default
7 (D7)	PA8	Yes
8 (D8)	PA9	Yes
9 (D9)	PC7	Yes	PWM3-CH2. Token over by RT-Thread PWM device by default
10 (D10)	PB6	Yes	PWM4-CH1. Token over by RT-Thread PWM device by default
11 (D11)	PA7	Yes	PWM1-CH1N. Token over by RT-Thread PWM device by default
12 (D12)	PA6	Yes
13 (D13, LED_BUILTIN)	PA5	Yes	USER LED
14 (D14)	PB9	Yes	I2C-SDA. Token over by RT-Thread I2C device by default
15 (D15)	PB8	Yes	I2C-SCL. Token over by RT-Thread I2C device by default
16 (D16)	PC13	Yes	USER Button
A0	PA0	Yes	ADC1-CH0. Token over by RT-Thread ADC device by default
A1	PA1	Yes	ADC1-CH1. Token over by RT-Thread ADC device by default
A2	PA4	Yes	ADC1-CH4. Token over by RT-Thread ADC device by default
A3	PB0	Yes	ADC1-CH8. Token over by RT-Thread ADC device by default
A4	PC1	Yes	ADC1-CH11. Token over by RT-Thread ADC device by default
A5	PC0	Yes	ADC1-CH10. Token over by RT-Thread ADC device by default
A6	--		On-chip internal voltage sensor. ADC1-CH17. Token over by RT-Thread ADC device by default
A7	--		On-chip internal temperature sensor. ADC1-CH16. Token over by RT-Thread ADC device by default

Notice:

1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.

References

1. STM32 Nucleo-64 user manual

3 Communication

3.1 I2C Bus

I2C bus is SCL/D15 and SDA/D14 pins. Users can directly include the #include <Wire.h>, which is the Arduino official I2C header file, to use the I2C bus.

3.2 SPI Bus

This board doesn't support Arduino SPI header file and functions.

3.3 Serial

This board supports to use Serial. method to operate uart2 device. See example.